Plaster-rasp.



P. ANDERSEN. PLASTER R'AsP. APPLICATION FILED MN. 3l. |914. RENEWED JULY l5, 19H?.

1 ,2l 6,9 1 5 Patented Feb. 20, 1917.

A T70RNE YS mr Nonms versus co.. Pnomumo.. wAsmNc ron. n. c.

.Pazzi ndemren PAUL ANDERSEN, OF FREEPORT, N EW YORK.

BLASTER-RAS?.

Specification of Letters Patent.

Patented Feb. 20, 1917.

Application filed January 31, 1914, Serial No./'815,665. Renewed .Tuly 15, 1916. Serial No. 109,569.

To all whom t may concern.'

Be it known thatI, PAUL ANDERSEN, a citizen of the United States, and a resident of` Freeport, in the county of Nassau and State -of New York, have invented a new and Improved Plaster-Rasp, of which the following is a full, clear, and exact description.

This invention relates to tools or implements for treating rough surfaces such, for instance, as cracked plaster walls or ceilings, or for the purpose of smoothing woodwork for painting or recoating in any manner.

Among the objects of the invention is to provide a tool of a simple, compact and effective nature which workmen may manipulate for the purposes of dressing or smoothing off rough, cracked paint or walls.

A further object of the invention is to provide a tool of a simple and cheap construction adapted for the smoothing or finishing of irregular surfaces, the shavings, dust or cuttings resulting from the operation of the tool being adapted to pass freely through the shell thereof into the interior and thence out from one end.

The foregoing and other objects of the invention will hereinafter be more fully described and claimed and illustrated in the drawings forming a part of this specification in which like characters of reference indicate corresponding parts in both the views, and in which- Figure 1 is a plan view of a device made in accordance with this invention; and

Fig. 2 is a transverse section ofthe same.

This invention in its preferred form is made of sheet metal 10, a rectangular strip of which is bent, as indicated in Fig. 2, so as to provide a plurality of fiat surfaces 11, 12 and 13 and an oval surface 14. rlhe ends of the rectangular strip may. be secured together, as indicated at 15, in any suitable manner as by folding and soldering, and the seam 15 may be located at any desired part of the tool. Before the sheet metal is bent into the form indicated, it is punched in a peculiar manner for the purpose of providing abrading burs 16. The burs 16 may be variously arranged and may be of different sizes individually according to the work to be performed, but by way of illustration I show the side 11 with the burs comparatively close together and the sides 12 and 13 and a portion of the oval surface 14 with the burs farther apart, and the remaining portion lof the oval surface being provided with the burs of the coarsest pitch. The meeting edges of the surfaces 11 and 14 form a comparatively sharp or acute angle 17 adapted to reach well into a square or undercut angle of molding or the like, and the angle between the surfaces 12 and 13 as well as the rounded portions of the surface 14 are adapted to coperate with various forms of moldings.

As above indicated, the ends of the device are open, the metal of which the device is formed being stiff enough for the purpose of bracing it in practical use. The powder or products of abrasion which pass through the burred points of the shell may collect within the shell or be delivered from either end thereof.

Among the various specific uses to which this implement may be put is the smoothing or dressing ofi-lof rough edges of plaster which result from the cracking of a ceiling or wall but which does not require to be replastered. It frequently happens that a section of a ceiling will drop slightly, say onesiXteenth or one-eighth of an inch below the main portion thereof, making an unsightly appearance, and in order for the ceiling to be repaired or repainted or recoated, the drop section must either be removed or the rough edge sandpapered or otherwise smoothed down to meet the normal surface. By means of this device a decorator may quickly dress off the rough edge without disturbing the main body of the plaster, and place the surface in condition .for whitewashing, papering, frescoing or the like.

Having thus described my invention, I claim as new and desire to securev by Letters Patent f The herein described plaster rasp comprising a hollow body formed from sheet metal bent so as to provide-a curved surface of oval form in cross section, a broad flat surface connected to the portion of the curved surface having the larger radius by an acute angle, and two other plane surfaces between the opposite edge of the broad flat surface and that portion of the curved surface having the shorter radius, said last 1n testimony whereof I have signed my two plane surfaces pr0]ect1ng inwardly toname to thls specification in the presence 0f Ward the curved surface forming an angle two subscribing Witnesses.

and the surfaces all having abrading points, PAUL ANDERSEN. certain of Which pointsrproj ect from the sur- Witnesses:

faces along the angles formed by meeting GEO. L. BEELER,

surfaces, substantially as set forth. .PHILIP D. ROLLHAUS.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C. 

